I'm a major fan of the Devil May Cry series, I am very eager to wait with what engine upgrade capcome comes up with in dmc5, since dmc4 engine is the smoothest and most beautiful engine I've yet seen, and I always pretty much play all the games which come out. Since I am hoping someone indeed from Capcom reads this forum (which is hugely douptful tho), I'll say what I didn't like the most in DMC4. Devil May Cry is my favourite game, to be exact, Devil May Cry 3, and that is, due to the boss fights, which are very well made and full of adrenaline. I still play Devil May Cry 3, and that is only because of the brilliant boss fights, which never get old. And the boss fights which don't get old, are Vergil's. Vergil fights are my all-time favourite bossfights in all games, fighting with Vergil is like fighting with a mirror, and Vergil is quick and has style. Vergil has offered me the most fun hours of gameplay ever, every time I reinstall DMC3, I just download a savegame, put dante must die on, pop swordfighter style, rebellion and switch mission 20 and fight for my life, fights lasting for ~30 minutes or even longer. Devil May Cry 3 was and is the most fun game ever in my list, and I believe I will keep playing it until PCs can't run it anymore. Devil May Cry 4 was a huge dissapointment for me, since it didn't offer any proper similiar epic swordfights, only boss because of who I play Devil May Cry 4 after finishing the game, is Credo (oh the amazing lighting in that bossfight!). And that one doesn't even offer half of the epicness as Vergil. And maybe it's just me, but Sanctus fights were the lamest boss fights I've ever had. So, what I'd like to see in DMC5, are some proper epic swordplay fights against humanic form demons, who play the same was as you, offering a great and fun swordplay challenge at the greatest difficulties. Even a doppelganger would be great, for example who has all the skills as you have and fights as a mirror, not like the doppelganger in dmc3. And please, procceed with the music style as it was in dmc3, that was some epic ****.
Make boss fights more epic and more interesting, less repetative (I didn't like dmc4 bosses at all, in dmc3 I liked all of them, except rudna and agnus, favourites - vergil, nevan, Beowulf).
Story goes as it goes, I wouldn't like to see anything what the fans want, I'd like to see the unexpected, and twists. And great music. But personally, I'd like to see an episode where it really goes downfall for the good characters, and that the evil side actually wins as well.